function s1_hello(){ 
echo "hello,wrold!" 
}
 s1_hello
 
function s2_tell_who_i_am(){
echo "Enter you name:"
read uer_name 
echo "uer name is $uer_name"
}
s2_tell_who_i_am 
 
function which_distro_do_i_use(){ 

NAME="Beta=Linux"
 echo $NAME
} 
 
which_distro_do_i_use 
function view_my_cpu_arch(){ 
uname -m
 }

view_my_cpu_arch 
function show_first_scsi_disk_size(){ 
lsblk -l| \grep disk |  \grep '^sda '|awk '{print $4}'
} 
show_first_scsi_disk_size 
function show_main_memory_size_in_megabytes(){
free -m |grep "Mem:" |awk '{print $2}'
}
show_main_memory_size_in_megabytes


